tree 8b00f6e08be99f40fbb0adfb54f9c4b2d954f5eb
parent 1288f89f2f6ffc55bd10155e3aaf28feb61077e7
author Marcel van Lohuizen <mpvl@golang.org> 1579187349 +0100
committer Marcel van Lohuizen <mpvl@golang.org> 1579196856 +0000

cue/ast/astutil: catch cycle for label expressions

If such labels need to would be applied to
the field referenced to.

In some cases this should actually be legal,
according to the spec, but we will make this
a compilation error for now until we fix the
evaluator.

Closes #251

Change-Id: I167a87cb1866fc2991abe29a05c53356cf23805b
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/4720
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>